Dynamic steady
Static steady
Dynamic unsteady
None of these
✅ The correct answer is option A.
Chemical Engineering MCQs
The rate of reaction does not decrease appreciably as the reaction proceeds in case of __________ reactions.
Autocatalytic
Exothermic
Endothermic
Autothermal
✅ The correct answer is option A.
Half life period of a chemical reaction is
The time required to reduce the concentration of the reacting substance to half its initial value
Half of the space time of a reaction
Half of the residence time of a reaction
None of these
✅ The correct answer is option A.
Fluid flow in a real packed bed can be approximated as __________ model.
Plug flow
Dispersion
Mixed flow
Tank in series
✅ The correct answer is option B.
Radioactive decay follows __________ order kinetics.
First
Second
Third
Zero
✅ The correct answer is option A.
A reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to
Lose a proton
Gain a proton
Lose an electron
None of these
✅ The correct answer is option A.
When a catalyst increases the rate of forward reaction, the value of rate constant
Increases
Decreases
Remain same
Becomes infinite
✅ The correct answer is option A.
A multiple reaction may be classified as a __________ reaction.
Consecutive or side
Parallel or side
Mixed
All of the above
✅ The correct answer is option D.
For series reaction, the relative yield
Is always greater for plug-flow reactor than for the single CSTR of the same volume
Statement in A is wrong
Decreases with increasing conversion
Both A and C hold good
✅ The correct answer is option D.
A rise in temperature
Normally tends to increase the reaction rate
Does not affect a catalysed reaction
Does not affect photo-chemical reaction rates
All of the above
✅ The correct answer is option D.